Category:Telephony

Subcategories

Cellular telephone systems - a system of telephone communications organized around a series of fixed site radio transceivers which each operate over a base area

Centrex telephone systems - an abbreviation of Central Exchange, a telephone switching system where the switching equipment is provided at a central exchange instead of at the customer's premises (such as in a private branch exchange)

Digital telephone systems - a telephone system which relies on digital, instead of analog, equipment for its switching and monitoring functions